The F84E was the Army Air Forces' second Jet Fighter. First flown in February 1946, and remained in producrion until 1953. Initially used as a long range bomber escort during the Korean War, It became the go to aircraft for close air support and daytime interdiction strikes.
Youre looking for a small to regular sized cache wrapped in black duct tape. You may need a stick or other "poking device" depending on how long your arm is. This is an easy find, use your Geo Sense instead of the exact Coordinates. Heres a link to see what this thing looked lik in action
https://www.youtube.com/watch?v=lJ4Myi387Fw